Дмитрий Беляев

@mixin long-shadow() {
    $shadow: "16px 0 0 currentColor";
    @for $i from 2 through 50 {
        $basis: 16 * $i;
        $shadow: #{$shadow}, #{$basis}px 0 0 currentColor;
    }
    box-shadow: $shadow;
}

function myHash(list) {
  var result = {};

  for (var i = 0; i < list.length; i++) {
    result[list[i][0]] = list[i][1];
  }

  return result;
}

console.log(myHash([['foo', 'bar'], ['baz', 42], [true, false]]));

var list = [['foo', 'bar'], ['baz', 42], [true, false]];

var result = list.reduce(function (obj, item) {
  obj[item[0]] = item[1];
  return obj;
}, {});

console.log(result);

this.getElementsByClassName('selector');
// или
this.querySelectorAll('.selector');

var n=prompt();
if(Number.isNaN(Number(n)))
alert('Это строка');

var x = 100;
function move(param) {
  return function(){
		alert("hello" + param)
  }
}

move(x)();

li.active{
    -webkit-transform: skewX(-20deg); //для активно li
    transform: skewX(-20deg);
}
a{
    -webkit-transform: skewX(20deg); //для текста
    transform: skewX(20deg);
}

Object.getOwnPropertyNames(foo).forEach(function(prop) {
  Object.defineProperty(
    bar,
    prop,
    Object.getOwnPropertyDescriptor(foo, prop)
  );
});

<audio autoplay controls src="http://stream-dc1.radioparadise.com/ogg-96m">